265624656 has 40 divisors (see below), whose sum is σ = 748580064. Its totient is φ = 80492160.

The previous prime is 265624627. The next prime is 265624669. The reversal of 265624656 is 656426562.

265624656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251011 + ... + 252066.

Almost surely, 2^265624656 is an apocalyptic number.

It is an amenable number.

265624656 is an abundant number, since it is smaller than the sum of its proper divisors (482955408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

265624656 is a wasteful number, since it uses less digits than its factorization.

265624656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503099 (or 503093 counting only the distinct ones).

The product of its digits is 518400, while the sum is 42.

The square root of 265624656 is about 16297.9954595650. The cubic root of 265624656 is about 642.8201201677.

The spelling of 265624656 in words is "two hundred sixty-five million, six hundred twenty-four thousand, six hundred fifty-six".